19829740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1019}}^1$

素因数の和:1174

約数の個数: 48

約数和(自身を含む): 47980800

約数和(自身を除く): 28151060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 973, 1019, 1390, 1946, 2038, 2780, 3892, 4076, 4865, 5095, 7133, 9730, 10190, 14266, 19460, 20380, 28532, 35665, 71330, 141641, 142660, 283282, 566564, 708205, 991487, 1416410, 1982974, 2832820, 3965948, 4957435, 9914870, 19829740]

約数ペア:

[(1, 19829740), (2, 9914870), (4, 4957435), (5, 3965948), (7, 2832820), (10, 1982974), (14, 1416410), (20, 991487), (28, 708205), (35, 566564), (70, 283282), (139, 142660), (140, 141641), (278, 71330), (556, 35665), (695, 28532), (973, 20380), (1019, 19460), (1390, 14266), (1946, 10190), (2038, 9730), (2780, 7133), (3892, 5095), (4076, 4865)]